/* ChciHry.cz — Člověče, nezlob se. Standalone styl (model B).
 * Sdílené tokeny + reset + @font-face: css/tokens.css (načíst PRED tímto souborem).
 * Zde jen herně specifické tokeny a layout/komponenty. Animace pouze transform/opacity, jen událostní. */

:root {
    --board: min(100vw - 1rem, 64svh);
    --cell: 7.6%;            /* velikost pole vůči desce */
    --piece: 7%;            /* velikost figurky */
    /* 4 barvy hráčů (colorblind: doplněno číslem na figurce) */
    --c0: #D9534F; --c0d: #9e302c; --c0l: #ff8e8a; --c0t: rgba(217, 83, 79, 0.16);
    --c1: #4FA94F; --c1d: #2f7a30; --c1l: #93e093; --c1t: rgba(79, 169, 79, 0.16);
    --c2: #E8B53A; --c2d: #a9801b; --c2l: #ffe08a; --c2t: rgba(232, 181, 58, 0.16);
    --c3: #4A90D9; --c3d: #2a5e98; --c3l: #9ec8f5; --c3t: rgba(74, 144, 217, 0.16);
}

html { height: 100%; }

body {
    font-family: 'Montserrat', 'Montserrat-fallback', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--surface-dark);
    color: var(--text-primary);
    min-height: 100svh;
    overflow-x: hidden;
    background-image:
        radial-gradient(circle at 18% 12%, rgba(217, 83, 79, 0.06) 0%, transparent 42%),
        radial-gradient(circle at 85% 85%, rgba(74, 144, 217, 0.06) 0%, transparent 48%);
}

button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }
svg { display: block; }

.sr-only {
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

/* ---------- layout ---------- */
.shell {
    container-type: inline-size; container-name: app;
    padding: max(0.5rem, env(safe-area-inset-top)) max(0.5rem, env(safe-area-inset-right))
             0.5rem max(0.5rem, env(safe-area-inset-left));
}
.app {
    display: grid;
    grid-template-areas: "head" "players" "board" "panel";
    justify-items: center;
    gap: clamp(0.4rem, 1.2dvh, 0.9rem);
    max-width: 1400px; margin: 0 auto;
}
.hd { grid-area: head; text-align: center; min-width: 0; }
.hd h1 {
    font-size: clamp(1.05rem, 4vw, 1.9rem); font-weight: 900; letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--primary) 0%, #F5E6D3 55%, var(--primary-dark) 100%);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent; color: transparent;
}
.hd .h1-sub { font-weight: 600; font-size: 0.66em; }
.status {
    margin-top: 0.2rem; font-size: clamp(0.85rem, 2.6vw, 1.05rem); font-weight: 600;
    color: var(--text-secondary); min-height: 1.4em;
}
.status.is-roll { color: var(--primary); }
.status.is-bad { color: var(--danger); }
.status.is-thinking { color: var(--primary); }
.status.is-over { color: var(--primary); }

/* ---------- hráči (chipy) ---------- */
.players {
    grid-area: players;
    display: flex; flex-wrap: wrap; justify-content: center; gap: 0.4rem;
    width: 100%; max-width: calc(var(--board) + 1rem);
}
.players:empty { display: none; }
.pchip {
    display: inline-flex; align-items: center; gap: 0.4rem;
    padding: 0.3rem 0.65rem; border-radius: 9999px;
    background: rgba(15, 23, 42, 0.7); border: 1px solid var(--gold-border);
    font-size: 0.8rem; font-weight: 700; color: var(--text-secondary);
    transition: border-color 0.15s ease, background 0.15s ease, transform 0.15s ease;
}
.pchip .pdot {
    width: 0.85rem; height: 0.85rem; border-radius: 50%;
    box-shadow: inset 0 -1px 2px rgba(0, 0, 0, 0.4);
}
.pchip .ptype { font-size: 0.7rem; font-weight: 600; color: var(--text-muted); }
.pchip .pdone { font-weight: 800; color: var(--text-primary); }
.pchip.active { border-color: var(--primary); background: rgba(212, 175, 55, 0.16); transform: translateY(-1px); color: var(--text-primary); }
.pchip.winner { border-color: var(--success); background: rgba(92, 184, 92, 0.18); }
.pchip.s0 .pdot { background: radial-gradient(circle at 38% 30%, var(--c0l), var(--c0) 60%, var(--c0d)); }
.pchip.s1 .pdot { background: radial-gradient(circle at 38% 30%, var(--c1l), var(--c1) 60%, var(--c1d)); }
.pchip.s2 .pdot { background: radial-gradient(circle at 38% 30%, var(--c2l), var(--c2) 60%, var(--c2d)); }
.pchip.s3 .pdot { background: radial-gradient(circle at 38% 30%, var(--c3l), var(--c3) 60%, var(--c3d)); }

/* ---------- deska ---------- */
.board-zone { grid-area: board; min-width: 0; display: flex; flex-direction: column; align-items: center; gap: 0.6rem; }
.board-wrap {
    width: var(--board); aspect-ratio: 1; padding: 2.5%;
    border: 3px solid var(--primary-dark); outline: 1px solid rgba(212, 175, 55, 0.45);
    border-radius: var(--radius-md);
    background:
        radial-gradient(circle at 30% 25%, rgba(40, 30, 12, 0.3), transparent 60%),
        linear-gradient(150deg, #20283a 0%, #161d2c 60%, #0d1420 100%);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.55), 0 0 60px rgba(212, 175, 55, 0.07);
    touch-action: manipulation; -webkit-user-select: none; user-select: none;
}
.board { position: relative; width: 100%; height: 100%; }

/* křížový podklad */
.cross { position: absolute; background: rgba(248, 250, 252, 0.04); border: 1px solid rgba(212, 175, 55, 0.12); }
.cross-v { left: 36.36%; width: 27.27%; top: 0; height: 100%; border-radius: 12px; }
.cross-h { top: 36.36%; height: 27.27%; left: 0; width: 100%; border-radius: 12px; }

.cell-layer { position: absolute; inset: 0; pointer-events: none; }
.cell {
    position: absolute; width: var(--cell); height: var(--cell);
    transform: translate(-50%, -50%); border-radius: 26%;
    background: rgba(15, 23, 42, 0.85); border: 1px solid rgba(212, 175, 55, 0.28);
    box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.05);
}
.cell.home { border-radius: 50%; background: rgba(2, 6, 23, 0.6); }
.cell.finish { border-radius: 30%; }
/* startovní pole — barevný prstenec */
.cell.start.s0 { border-color: var(--c0); box-shadow: 0 0 0 2px var(--c0t), inset 0 0 6px var(--c0t); }
.cell.start.s1 { border-color: var(--c1); box-shadow: 0 0 0 2px var(--c1t), inset 0 0 6px var(--c1t); }
.cell.start.s2 { border-color: var(--c2); box-shadow: 0 0 0 2px var(--c2t), inset 0 0 6px var(--c2t); }
.cell.start.s3 { border-color: var(--c3); box-shadow: 0 0 0 2px var(--c3t), inset 0 0 6px var(--c3t); }
/* cíl a domeček — tónované barvou hráče */
.cell.finish.s0, .cell.home.s0 { background: var(--c0t); border-color: var(--c0); }
.cell.finish.s1, .cell.home.s1 { background: var(--c1t); border-color: var(--c1); }
.cell.finish.s2, .cell.home.s2 { background: var(--c2t); border-color: var(--c2); }
.cell.finish.s3, .cell.home.s3 { background: var(--c3t); border-color: var(--c3); }

/* cílový bod (nápověda kam táhnout) */
.cell.target::after {
    content: ''; position: absolute; inset: 18%; border-radius: inherit;
    background: rgba(212, 175, 55, 0.85); box-shadow: 0 0 12px rgba(212, 175, 55, 0.8);
    animation: tdot 0.2s ease-out;
}
@keyframes tdot { from { transform: scale(0.3); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.cell.drophint { border-color: var(--primary); box-shadow: 0 0 0 2px rgba(212, 175, 55, 0.5); }

/* střed (medailon) */
.cell.center {
    width: 16%; height: 16%; border-radius: 50%;
    background: conic-gradient(from 45deg, var(--c2) 0 25%, var(--c3) 0 50%, var(--c0) 0 75%, var(--c1) 0 100%);
    border: 2px solid rgba(212, 175, 55, 0.6);
    box-shadow: 0 0 14px rgba(212, 175, 55, 0.35), inset 0 0 8px rgba(0, 0, 0, 0.4);
}
.center-star { display: none; }

/* ---------- figurky ---------- */
.pieces { position: absolute; inset: 0; }
/* figurka = izometrická kuželka/pěšec (SVG); box vyšší než široký, kotvený na střed pole */
.piece {
    position: absolute; width: var(--piece); height: calc(var(--piece) * 1.4);
    transform: translate(-50%, -50%); padding: 0; background: none; border: 0;
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.4));
    transition: left 0.32s cubic-bezier(0.34, 1.4, 0.64, 1), top 0.32s cubic-bezier(0.34, 1.4, 0.64, 1),
                filter 0.18s ease, transform 0.18s ease;
    touch-action: none;
}
.piece .pawn { width: 100%; height: 100%; display: block; overflow: visible; pointer-events: none; }
.pawn-sh { fill: rgba(0, 0, 0, 0.3); }
.pawn-gl { fill: rgba(255, 255, 255, 0.5); }
.pawn-num { fill: #fff; font-family: 'Montserrat', sans-serif; font-weight: 800; font-size: 9px; text-anchor: middle; dominant-baseline: middle; paint-order: stroke; stroke: rgba(0, 0, 0, 0.45); stroke-width: 0.7px; }
.piece.selectable { cursor: pointer; }
.piece.selectable:hover { transform: translate(-50%, -50%) scale(1.08); }
.piece:focus { outline: none; }
.piece:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; z-index: 6; }
.piece.sel { z-index: 7; filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.4)) drop-shadow(0 0 4px var(--primary)) drop-shadow(0 0 2px var(--primary)); animation: pfloat 1.4s ease-in-out infinite; }
@keyframes pfloat { 0%, 100% { transform: translate(-50%, -52%) scale(1.06); } 50% { transform: translate(-50%, -48%) scale(1.06); } }
.piece.hintable { filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.4)) drop-shadow(0 0 4px rgba(212, 175, 55, 0.9)); }
.piece.dragging { transition: none; z-index: 9; transform: translate(-50%, -50%) scale(1.12); cursor: grabbing; }
.piece.nogo { animation: pshake 0.4s ease; }
@keyframes pshake { 0%, 100% { transform: translate(-50%, -50%); } 25% { transform: translate(-60%, -50%); } 75% { transform: translate(-40%, -50%); } }
.piece.captured { animation: pcap 0.45s ease forwards; }
@keyframes pcap { 0% { transform: translate(-50%, -50%) scale(1); } 40% { transform: translate(-50%, -78%) scale(1.12); } 100% { transform: translate(-50%, -50%) scale(1); } }
.piece.landed { animation: pland 0.3s cubic-bezier(0.34, 1.56, 0.64, 1); }
@keyframes pland { 0% { transform: translate(-50%, -50%) scale(0.7); } 60% { transform: translate(-50%, -50%) scale(1.1); } 100% { transform: translate(-50%, -50%) scale(1); } }

/* ---------- kostka ---------- */
.dice-zone { display: flex; align-items: center; gap: 0.8rem; }
.die {
    width: clamp(46px, 12vw, 60px); height: clamp(46px, 12vw, 60px);
    border-radius: 22%; position: relative; cursor: pointer;
    background: linear-gradient(150deg, #fefefe, #d8dde6);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.5), inset 0 -3px 6px rgba(0, 0, 0, 0.18), inset 0 2px 4px rgba(255, 255, 255, 0.9);
    transition: transform 0.12s ease;
}
.die:hover { transform: translateY(-2px); }
.die:active { transform: scale(0.93); }
.die .pips { position: absolute; inset: 16%; display: grid; grid-template: repeat(3, 1fr) / repeat(3, 1fr); gap: 8%; }
.die .pip { width: 78%; height: 78%; border-radius: 50%; background: #1a2233; box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.5); visibility: hidden; place-self: center; }
.die .pip.on { visibility: visible; }
.die.rolling { animation: dieRoll 0.5s ease; }
@keyframes dieRoll { 0% { transform: rotate(0) scale(1); } 30% { transform: rotate(160deg) scale(1.12); } 60% { transform: rotate(300deg) scale(0.96); } 100% { transform: rotate(360deg) scale(1); } }
.btn-roll { min-width: 11rem; }
.btn-roll:not(:disabled) { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: var(--surface-dark); border-color: var(--primary); }

/* ---------- panel ---------- */
.panel { grid-area: panel; display: flex; flex-direction: column; align-items: center; gap: 0.6rem; width: 100%; max-width: calc(var(--board) + 1.2rem); }
.btns { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.45rem; width: 100%; }
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    min-height: 44px; min-width: 44px; padding: 0.5rem 0.7rem;
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.12), rgba(212, 175, 55, 0.05));
    border: 1px solid var(--gold-border); border-radius: 9999px; color: var(--text-primary);
    font-size: 0.8rem; font-weight: 600; letter-spacing: 0.02em;
    transition: border-color 0.15s ease, transform 0.15s ease; text-align: center;
}
.btn:hover { border-color: var(--primary); transform: translateY(-1px); }
.btn:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none; }
.btn[aria-pressed="true"] { border-color: var(--primary); background: rgba(212, 175, 55, 0.16); }
.btn-primary { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: var(--surface-dark); border-color: var(--primary); }
.btn-primary:hover { border-color: #F5E6D3; }
.btn[hidden] { display: none; }

/* ---------- switch (přepínač v nastavení) ---------- */
.switch-row { display: flex; align-items: center; justify-content: space-between; gap: 0.8rem; padding: 0.4rem 0; font-size: 0.9rem; font-weight: 600; color: var(--text-primary); }
.switch-row small { color: var(--text-muted); font-weight: 500; }
.switch {
    flex: 0 0 auto; width: 48px; height: 28px; border-radius: 9999px;
    background: rgba(100, 116, 139, 0.4); border: 1px solid var(--gold-border);
    position: relative; transition: background 0.2s ease;
}
.switch .switch-knob { position: absolute; top: 2px; left: 2px; width: 22px; height: 22px; border-radius: 50%; background: #f8fafc; box-shadow: 0 1px 3px rgba(0, 0, 0, 0.5); transition: transform 0.2s ease; }
.switch[aria-checked="true"] { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); }
.switch[aria-checked="true"] .switch-knob { transform: translateX(20px); }
.switch:focus-visible { outline: 3px solid var(--primary); outline-offset: 2px; }

/* ---------- seat-config (nastavení hráčů) ---------- */
.seat-config { display: flex; flex-direction: column; gap: 0.5rem; }
.seat-row { display: flex; align-items: center; gap: 0.55rem; padding: 0.45rem 0.55rem; border: 1px solid var(--gold-border); border-radius: var(--radius-lg); background: rgba(30, 41, 59, 0.5); }
.seat-row .sw { width: 1.1rem; height: 1.1rem; border-radius: 50%; flex: 0 0 auto; box-shadow: inset 0 -1px 2px rgba(0, 0, 0, 0.4); }
.seat-row.s0 .sw { background: radial-gradient(circle at 38% 30%, var(--c0l), var(--c0) 60%, var(--c0d)); }
.seat-row.s1 .sw { background: radial-gradient(circle at 38% 30%, var(--c1l), var(--c1) 60%, var(--c1d)); }
.seat-row.s2 .sw { background: radial-gradient(circle at 38% 30%, var(--c2l), var(--c2) 60%, var(--c2d)); }
.seat-row.s3 .sw { background: radial-gradient(circle at 38% 30%, var(--c3l), var(--c3) 60%, var(--c3d)); }
.seat-row .sname { flex: 0 0 auto; width: 4.6rem; font-weight: 700; font-size: 0.85rem; }
.seat-row .stoggle { display: inline-flex; border: 1px solid var(--gold-border); border-radius: 9999px; overflow: hidden; }
.seat-row .stoggle button { padding: 0.35rem 0.7rem; font-size: 0.78rem; font-weight: 600; color: var(--text-secondary); min-height: 38px; }
.seat-row .stoggle button.on { background: rgba(212, 175, 55, 0.2); color: var(--primary); }
.seat-row .slevel { margin-left: auto; }
.seat-row .slevel select { background: rgba(15, 23, 42, 0.9); color: var(--text-primary); border: 1px solid var(--gold-border); border-radius: var(--radius-md); padding: 0.35rem 0.4rem; font: inherit; font-size: 0.78rem; min-height: 38px; }
.seat-row .slevel[hidden] { display: none; }

/* ---------- dialogy ---------- */
dialog.dlg {
    margin: auto; max-width: min(94vw, 27rem); width: 100%;
    background: linear-gradient(160deg, rgba(15, 23, 42, 0.97), rgba(2, 6, 23, 0.97)); color: var(--text-primary);
    border: 1px solid rgba(212, 175, 55, 0.35); border-radius: var(--radius-xl); padding: 1.3rem;
    box-shadow: 0 25px 70px rgba(0, 0, 0, 0.7), 0 0 90px rgba(212, 175, 55, 0.12);
}
dialog.dlg::backdrop { background: rgba(2, 6, 23, 0.72); backdrop-filter: blur(4px); }
.dlg h2 { font-size: 1.25rem; font-weight: 800; margin-bottom: 0.9rem; color: var(--primary); text-align: center; }
.dlg .dlg-text { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.5; text-align: center; }
.dlg fieldset { border: 0; margin-bottom: 0.9rem; }
.dlg legend { font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.07em; color: var(--text-muted); margin-bottom: 0.4rem; }
.seg { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; gap: 0.4rem; }
.seg-count { max-width: 14rem; }
.seg label { display: flex; align-items: center; justify-content: center; min-height: 44px; padding: 0.45rem 0.5rem; border: 1px solid var(--gold-border); border-radius: var(--radius-lg); background: rgba(30, 41, 59, 0.6); font-size: 0.85rem; font-weight: 600; text-align: center; cursor: pointer; transition: border-color 0.15s ease, background 0.15s ease; }
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg input:checked + span { color: var(--primary); }
.seg label:has(input:checked) { border-color: var(--primary); background: rgba(212, 175, 55, 0.14); box-shadow: 0 0 12px rgba(212, 175, 55, 0.25); }
.seg label:has(input:focus-visible) { outline: 2px solid var(--primary); outline-offset: 2px; }
.dlg-actions { display: flex; gap: 0.5rem; justify-content: center; margin-top: 1.1rem; flex-wrap: wrap; }
.dlg-actions .btn { flex: 1 1 auto; }
.dlg .stats-line { text-align: center; margin-top: 0.7rem; color: var(--text-secondary); font-size: 0.9rem; }
.dlg .result-emoji { display: block; text-align: center; font-size: 2.6rem; margin-bottom: 0.4rem; }

/* ---------- toast ---------- */
.toast {
    position: fixed; left: 50%; bottom: max(1rem, env(safe-area-inset-bottom)); transform: translateX(-50%);
    display: flex; gap: 0.6rem; align-items: center;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.97), rgba(2, 6, 23, 0.97));
    border: 1px solid rgba(212, 175, 55, 0.4); border-radius: 9999px;
    padding: 0.55rem 0.6rem 0.55rem 1rem; font-size: 0.85rem; font-weight: 600;
    box-shadow: 0 10px 35px rgba(0, 0, 0, 0.6); z-index: 90; opacity: 1; max-width: 92vw;
    transition: opacity 0.3s ease, transform 0.3s ease;
}
.toast[hidden] { display: none; }
.toast.is-bad { border-color: var(--danger); }
.toast.hiding { opacity: 0; transform: translateX(-50%) translateY(10px); }
.toast .btn { min-height: 36px; padding: 0.3rem 0.7rem; font-size: 0.78rem; }
.confetti { position: fixed; inset: 0; pointer-events: none; z-index: 80; }

/* ---------- obsahová sekce (SEO/GEO) ---------- */
.content { max-width: 820px; margin: 2.5rem auto 0; padding: 0 max(1rem, env(safe-area-inset-right)) 2.5rem max(1rem, env(safe-area-inset-left)); line-height: 1.65; color: var(--text-secondary); }
.content .answer-first { font-size: 1.02rem; color: var(--text-primary); background: rgba(15, 23, 42, 0.85); border: 1px solid var(--gold-border); border-left: 4px solid var(--primary); border-radius: var(--radius-lg); padding: 1rem 1.2rem; }
.content h2 { font-size: clamp(1.25rem, 3.4vw, 1.6rem); font-weight: 800; color: var(--text-primary); margin: 2.2rem 0 0.8rem; }
.content h3 { font-size: 1.05rem; font-weight: 700; color: var(--primary); margin: 1.3rem 0 0.45rem; }
.content p { margin-bottom: 0.8rem; }
.content ul, .content ol { margin: 0 0 0.9rem 1.4rem; }
.content li { margin-bottom: 0.35rem; }
.content strong { color: var(--text-primary); }
.faq-item { background: rgba(15, 23, 42, 0.85); border: 1px solid var(--gold-border); border-radius: var(--radius-lg); padding: 0.9rem 1.1rem; margin-bottom: 0.7rem; }
.faq-item h3 { margin: 0 0 0.4rem; }
.faq-item p { margin: 0; font-size: 0.95rem; }
.more-games { display: flex; flex-wrap: wrap; gap: 0.6rem; margin: 0.8rem 0; }
.more-games a { padding: 0.45rem 1rem; background: rgba(212, 175, 55, 0.1); border: 1px solid var(--gold-border); border-radius: 9999px; font-size: 0.875rem; font-weight: 600; transition: border-color 0.15s ease, transform 0.15s ease; }
.more-games a:hover { border-color: var(--primary); transform: translateY(-2px); color: var(--primary); }
.more-games .all { flex-basis: 100%; display: flex; justify-content: center; margin-top: 0.6rem; }
.updated { margin-top: 2rem; font-size: 0.8rem; color: var(--text-muted); }

/* ========== ANIMOVANÝ NÁVOD (mini-ukázky) ========== */
.tutorial { margin-top: 1.2rem; }
.demos { display: grid; gap: 1.4rem; grid-template-columns: 1fr; }
@media (min-width: 720px) { .demos { grid-template-columns: 1fr 1fr; } }
.demo { margin: 0; background: rgba(15, 23, 42, 0.85); border: 1px solid var(--gold-border); border-radius: var(--radius-lg); padding: 1rem 1.1rem 1.1rem; display: flex; flex-direction: column; gap: 0.7rem; }
.demo-title { font-size: 1.02rem; font-weight: 700; color: var(--primary); margin: 0; }
.demo-board {
    position: relative; width: min(100%, 280px); aspect-ratio: 1.5; align-self: center; margin: 0.2rem 0;
    border: 2px solid var(--primary-dark); border-radius: var(--radius-sm);
    background: linear-gradient(150deg, #20283a 0%, #161d2c 60%, #0d1420 100%);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.45); overflow: hidden;
}
.demo-cell { position: absolute; width: 11%; height: 16.5%; transform: translate(-50%, -50%); border-radius: 22%; background: rgba(15, 23, 42, 0.9); border: 1px solid rgba(212, 175, 55, 0.3); }
.demo-cell.home { border-radius: 50%; background: rgba(2, 6, 23, 0.6); }
.demo-cell.s0 { border-color: var(--c0); }
.demo-cell.s2 { border-color: var(--c2); }
.demo-cell.finish.s0 { background: var(--c0t); }
.demo-cell.finish.s2 { background: var(--c2t); }
.demo-cell.start { box-shadow: 0 0 0 2px rgba(212, 175, 55, 0.35); }
.demo-piece {
    position: absolute; width: 10%; height: 15%; transform: translate(-50%, -50%); border-radius: 50%;
    left: 0; top: 0; display: grid; place-items: center; color: #fff; font-weight: 800; font-size: 0.7rem; text-shadow: 0 1px 2px rgba(0,0,0,0.6);
    transition: left 0.5s cubic-bezier(0.4, 0, 0.2, 1), top 0.5s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.4s ease, transform 0.4s ease;
    filter: drop-shadow(0 2px 3px rgba(0, 0, 0, 0.5)); z-index: 2;
}
.demo-piece.s0 { background: radial-gradient(circle at 36% 28%, var(--c0l), var(--c0) 58%, var(--c0d)); }
.demo-piece.s2 { background: radial-gradient(circle at 36% 28%, var(--c2l), var(--c2) 58%, var(--c2d)); }
.demo-piece.captured { opacity: 0; transform: translate(-50%, -90%) scale(0.4); }
.demo-piece.active { box-shadow: 0 0 0 3px var(--primary), 0 0 12px rgba(212, 175, 55, 0.7); z-index: 4; }
.demo-piece.target-capt { box-shadow: 0 0 0 3px var(--danger), 0 0 12px rgba(217, 83, 79, 0.7); }
.demo-die { position: absolute; right: 5%; top: 12%; width: 15%; height: 22.5%; border-radius: 18%; background: linear-gradient(150deg, #fefefe, #d8dde6); display: grid; grid-template: repeat(3,1fr)/repeat(3,1fr); gap: 8%; box-shadow: 0 3px 8px rgba(0,0,0,0.45); z-index: 3; }
.demo-die .pip { width: 64%; height: 64%; place-self: center; border-radius: 50%; background: #1a2233; visibility: hidden; }
.demo-die .pip.on { visibility: visible; }
.demo-count { position: absolute; transform: translate(-50%, -50%); width: 7%; height: 10.5%; border-radius: 50%; background: rgba(212,175,55,0.95); color: #0F172A; font-weight: 800; font-size: 0.62rem; display: grid; place-items: center; opacity: 0; transition: opacity 0.25s ease; z-index: 5; }
.demo-count.show { opacity: 1; }
.demo-caption { min-height: 2.6em; font-size: 0.92rem; font-weight: 600; color: var(--text-primary); background: rgba(2, 6, 23, 0.55); border-left: 3px solid var(--primary); border-radius: var(--radius-sm); padding: 0.5rem 0.7rem; }
.demo-controls { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.demo-controls .btn { min-height: 40px; font-size: 0.78rem; padding: 0.4rem 0.9rem; }
.demo-steps { margin: 0.2rem 0 0 1.2rem; font-size: 0.9rem; color: var(--text-secondary); }
.demo-steps li { margin-bottom: 0.25rem; }
.demo-steps li.is-current { color: var(--primary); font-weight: 700; }

/* ---------- responzivita ---------- */
@media (min-width: 768px) {
    :root { --board: min(70svh, 560px); }
}
@container app (min-width: 1024px) {
    .app {
        grid-template-areas: "head head" "players players" "board panel";
        grid-template-columns: auto minmax(220px, 280px);
        align-items: start; justify-content: center; justify-items: stretch; column-gap: 1.5rem;
    }
    .hd, .players { justify-self: center; }
    .panel { max-width: none; position: sticky; top: 1rem; }
    .btns { grid-template-columns: 1fr; }
}
@media (min-width: 1024px) {
    :root { --board: min(70svh, calc(100vw - 360px), 620px); }
}
/* mobil landscape */
@media (max-height: 500px) and (orientation: landscape) {
    :root { --board: min(86svh - 1rem, calc(100vw - 250px)); }
    .app { grid-template-areas: "board head" "board players" "board panel"; grid-template-columns: auto 1fr; grid-template-rows: auto auto 1fr; column-gap: 1rem; align-items: start; }
    .hd h1 { font-size: 1rem; }
    .hd .h1-sub { display: block; font-size: 0.66rem; }
    .panel { max-width: 320px; justify-self: center; }
    .btns { grid-template-columns: repeat(2, 1fr); gap: 0.35rem; }
    .btn { min-height: 40px; font-size: 0.72rem; }
}
@media (min-width: 2560px) {
    :root { --board: min(70svh, 820px); }
    .content { max-width: 1000px; font-size: 1.1rem; }
}

/* výkon: na malých displejích vypnout smyčkové animace */
@media (max-width: 768px) {
    .piece.sel { animation: none; }
}
/* omezený pohyb */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
    .piece, .demo-piece { transition: none !important; }
}